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52809 (1998 QQ91)
Classification: Main-belt Asteroid          SPK-ID: 2052809
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1984732646711653 2.8028e-08  
a 2.154989283941723 4.3745e-09 au
q 1.727281525426432 6.1395e-08 au
i 5.314990766643186 2.7899e-06 deg
node 139.5783561743219 2.8311e-05 deg
peri 222.3787010375515 2.9275e-05 deg
M 16.97906912801157 5.7842e-06 deg
tp 2459146.002387703243
(2020-Oct-23.50238770)
1.8595e-05 TDB
period 1155.489754998715
3.16
3.5184e-06
9.633e-09
d
yr
n .311556202417736 9.4867e-10 deg/d
Q 2.582697042457013 5.2428e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2276  
   data-arc span      8762 days (23.99 yr)  
   first obs. used      1997-02-15  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:48:16  

Additional Information
 Earth MOID = .72672 au 
 Jupiter MOID = 2.87326 au 
 T_jup = 3.671 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.14   n/a E2021B10  
diameter diameter 3.595 km 0.247 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.150   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

52809 (1998 QQ91)          Discovered 1998-Aug-28 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QQ91 = 2001 MQ14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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